Improvement in fluid-meters



1. 0. JOHNSON.

Fluid Meters.

Patented May AM. PHara-umosmPn/c cu m m'mvms mam UNITED STATES JOHN O. JOHNSON, OF NEW YORK, N. Y.

IMPROVEMENT IN FLUID-METERS.

PATENT O Specification forming part of Letters Patent No. 138,657, dated May 6, 1873; apph tion filed March 20, 1873. I

To all whom it may concern:

Be it known that I, JOHN O. J OHNSON, of the city, county, and State of New York, have invented a new and Improved Fluid-Meter; and I do hereby declare the, following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification, which drawing represents a vertical section of my meter.

This invention consists in the combination of two auger-shaped screws-one of which is stationary while the other revolves in the interior of a pipe, through which" the fluid to be measured flows, the revolving screw being provided with a shaft which connects with a registering mechanism inclosed in a case that'is cast with or otherwise firmly secured to the fluid-supply pipe in such a manner that the fluid on striking the stationary screw is set in a whirling motion, whereby the movable screw is compelled to revolve, and the quantity of fluid passing through the meter is correctly indicated by the registering-mechanism. The arbor of the revolving screw extends freely through a hole in the supply-pipe, and any fluid which leaks past said arbor into the chamber of the registering mechanism, drops back upon the revolving screw through asmall channel leading from the lowest point of the registering-chamber into the pipe inclosing the screw.

In the drawing, the letter A designates a pipe, which is bored out perfectly true, and which may be lined with glass or other noncorrosive material according to the nature of the fluid to be measured. In this pipe are fitted two auger-shaped screws, B G, the screw B being stationary and bored out to admit the arbor D, on which is mounted the screw 0. The pipe A screws at one end into an elbow, E, which connects with the feed-pipe, and the other end of said pipe screws in an elbow, F, which connects with the deliverypipe. Through this lastnamed elbow extends a ly secured a case, H, which in screw 0. The fluid which is ad screw, G, the inner end of w ch forms the step for the arbor D, while the bow E is provided with a hole through whf h said arbor passes freely, no stufflng-box eing used so as to reduce friction. To the e ow E is firm oses the registering mechanism, and thro gh this case extends a screw, I, with a poi ted end that catches in the center of the ar: r D, and by these means said arbor, togethe ith its screw 0, are enabled to revolve with} he least possible friction. On the arbor l 3 is secured a worm, J, which transmits the otion of the screw 0 to the registering meej the lowest point of the case H e tends a small channel, K, into the pipe A, so; which may find its way into t y chamber has a chance to flow ck upon the 'tted through the supply-pipe first strikes I screw B, which imparts to the; ame a whirling motion, and "as the fluid str es the movable screwO it imparts to the s me a revolving motion, which, being trans! t-ted to a registering mechanism, serves to; quantity of the fluid that pass meter. 5 i

I do not broadly claim the e movable and stationary angerin connection with a fluid-mete old and well known. What I claim as new, and d by Letters Patent, isi g The case H for containing t mechanism and the worm-whee D connected with the elbow tion with each other and with: and stationary augershaped so A, screw G, and elbow F, all co arranged as herein shown and This specification signed b day of March, 1873.

through the ployment of aped screws for such are ire to secure e registering of the arbor in combinai JOHN O. OHNSON. Witnesses:

W. HAUFF, E. F. KASTENHUBER.

registering- 

